Remove support for branch hints from the IA32 and X64 assembler.

src/x64/assembler-x64.h

 // Copyright (c) 1994-2006 Sun Microsystems Inc.
 // All Rights Reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 // - Redistributions of source code must retain the above copyright notice,
 // this list of conditions and the following disclaimer.
 //
@@ skipping 309 matching lines @@
     case greater_equal:
       return less_equal;
     case less_equal:
       return greater_equal;
     default:
       return cc;
   };
 }
 
 
-enum Hint {
-  no_hint = 0,
-  not_taken = 0x2e,
-  taken = 0x3e
-};
-
-// The result of negating a hint is as if the corresponding condition
-// were negated by NegateCondition.  That is, no_hint is mapped to
-// itself and not_taken and taken are mapped to each other.
-inline Hint NegateHint(Hint hint) {
-  return (hint == no_hint)
-      ? no_hint
-      : ((hint == not_taken) ? taken : not_taken);
-}
-
-
 // -----------------------------------------------------------------------------
 // Machine instruction Immediates
 
 class Immediate BASE_EMBEDDED {
  public:
   explicit Immediate(int32_t value) : value_(value) {}
 
  private:
   int32_t value_;
 
@@ skipping 851 matching lines @@
 
   // Jump near absolute indirect (r64)
   void jmp(Register adr);
 
   // Jump near absolute indirect (m64)
   void jmp(const Operand& src);
 
   // Conditional jumps
   void j(Condition cc,
          Label* L,
-         Hint hint,
          Label::Distance distance = Label::kFar);
-  void j(Condition cc, Label* L, Label::Distance distance = Label::kFar) {
-    j(cc, L, no_hint, distance);
-  }
   void j(Condition cc, Handle<Code> target, RelocInfo::Mode rmode);
 
   // Floating-point operations
   void fld(int i);
 
   void fld1();
   void fldz();
   void fldpi();
   void fldln2();
 
@@ skipping 412 matching lines @@
  private:
   Assembler* assembler_;
 #ifdef DEBUG
   int space_before_;
 #endif
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_X64_ASSEMBLER_X64_H_